DevTools and Headless Chrome – The Automation Power-Couple

Slide 1

Slide 2

DEVTOOLS & HEADLESS CHROME: THE AUTOMATION POWER-COUPLE

Slide 3

Yonatan Mevorach @cowchimp

Slide 4

Slide 5

Slide 6

Web Automation youtu.be/fsF7enQY8uI

Slide 7

”I can’t automate this” -- no one ever (after watching this talk)

Slide 8

Headless Browsers cbnd flic.kr/p/qnSPdN

Slide 9

Chrome

Slide 10

headless Chrome

Slide 11

Slide 12

Slide 13

[ { { { { { { { { { { { { { { { { ] "time": "time": "time": "time": "time": "time": "time": "time": "time": "time": "time": "time": "time": "time": "time": "time": "08:00 "09:00 "09:30 "10:05 "10:40 "11:10 "11:45 "12:20 "12:55 "13:55 "14:25 "15:00 "15:30 "16:05 "16:40 "19:00

09:00", "title": "Registration, Breakfast, and Booths Open" }, 09:30", "title": "Opening of the Conference" }, 10:00", "title": "DevTools and Headless Chrome – The Automation Power-Couple" }, 10:35", "title": "Web performance in large-scale applications" }, 11:10", "title": "Backends for frontends with GraphQL" }, 11:45", "title": "Break" }, 12:15", "title": "JavaScript security: a retrospective" }, 12:50", "title": "Moving Web applications into Virtual Reality" }, 13:50", "title": "Lunch" }, 14:20", "title": "OpenSpace opening" }, 14:55", "title": "Channel your inner rockstar with the web audio API." }, 15:25", "title": "Break" }, 16:00", "title": "Challenge Accepted: Scoping Errors in “Multi-App” Environment" }, 16:40", "title": "Getting rid of runtime errors with Elm" }, 17:00", "title": "Close Day" }, ...", "title": "Dinner and Party" }

Slide 14

Slide 15

Slide 16

Slide 17

Slide 18

Slide 19

Slide 20

Slide 21

Slide 22

Slide 23

Slide 24

Slide 25

headless Chrome

Slide 26

headless Firefox

Slide 27

Chrome DevTools

Slide 28

Slide 29

Slide 30

Slide 31

protocol Chrome DevTools

Slide 32

DevTools Embedding Frontendapp WebSockets ChromeAPI Headless Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ

Slide 33

{ id: 1, method: "Runtime.evaluate", params: { expression: "1 + 1" } } DevTools Embedding Frontendapp ChromeAPI Headless Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ

Slide 34

{ id: 1, method: "Runtime.evaluate", params: { expression: "1 + 1" } } DevTools Embedding Frontendapp ChromeAPI Headless { id: 1, result: { result: { type: "number", value: 2, description: "2" }, wasThrown: false } } Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ